在一项带有尼古丁的特征正性辨别任务中进行信号追踪与目标追踪：条件刺激的空间位置的重要性。
Sign- vs. goal-tracking in a feature positive discrimination task with nicotine: importance of spatial location of the conditional stimulus.
机构信息
Department of Psychology, University of Nebraska-Lincoln, Lincoln, NE 68588-0308, USA.
出版信息
Behav Brain Res. 2011 Apr 15;218(2):341-5. doi: 10.1016/j.bbr.2010.11.048. Epub 2010 Dec 1.
Abstract
We assessed whether sign-tracking developed along with goal-tracking in a Pavlovian drug discrimination task. Rats had nicotine sessions intermixed with saline sessions. For nicotine sessions, 15-s illumination of a light near (Experiment 1) or far (Experiment 2) from the dipper receptacle was followed by sucrose. Saline sessions were similar to nicotine sessions except sucrose was withheld. Regardless of location, the light evoked goal-tracking only on nicotine sessions. Only rats with the light near the dipper developed sign-tracking.
摘要
我们评估了在巴甫洛夫药物辨别任务中，信号跟踪是否与目标跟踪一起发展。老鼠在尼古丁阶段和盐水阶段之间交替进行。对于尼古丁阶段，在勺子容器附近（实验 1）或远处（实验 2）有 15 秒的灯光照明，随后是蔗糖。盐水阶段与尼古丁阶段相似，只是没有提供蔗糖。无论位置如何，灯光仅在尼古丁阶段引发目标跟踪。只有在勺子附近有灯光的老鼠才会发展出信号跟踪。
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